The Plank is an isometric exercise to target and isolate your abdominal muscles.
The Plank targets your core and exercises your stability, posture, and balance. Planks are an isometric exercise, meaning that your joints do not move to contract or extend throughout the exercise. Planks help you build stability and strengthen your lower back as you are forced to stabilize your core muscles to brace your body.
Position yourself on the floor or a mat facing forward.
Push yourself up and tuck your elbows directly underneath your shoulders, extending your legs and feet straight out behind you.
Brace yourself with your elbows and toes, keeping your back straight as you hold your position to target your core.